The Yost Heavy Duty Mechanics Vise is a durable high-strength combination bench vise ideal for reliable service in professional applications. The straight-pull screw and nut design combined with 60,000 psi ductile iron construction results in a vise that generate superior clamping force. Additional features include replaceable pipe jaws, interlocking swivel base, and generous anvil work surface. This is the perfect vise for the serious mechanics workbench.